# CVE-2025-27156: Tuleap allows content injection via emails sent by the mass emailing features

> Attackers can inject malicious HTML into mass emails, facilitating phishing or exploiting mail client vulnerabilities in Tuleap.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Mar 2025
- **Updated:** 4 Mar 2025
- **Also known as:** GHSA-x2v2-xr59-c9cf

## What is CVE-2025-27156?

CVE-2025-27156 is a medium-severity cross-site scripting vulnerability in Enalean Tuleap, published on 4 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Tuleap is an Open Source Suite to improve management of software developments and collaboration. The mass emailing features do not sanitize the content of the HTML emails. A malicious user could use this issue to facilitate a phishing attempt or to indirectly exploit issues in the recipients mail clients. This vulnerability is fixed in Tuleap Community Edition 16.4.99.1740567344 and Tuleap Enterprise Edition 16.4-6 and 16.3-11.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-27156?

It affects 1 product.


Products: Enalean Tuleap.

## How do I fix CVE-2025-27156?

No fix has been published for CVE-2025-27156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27156 being exploited?

There is no known exploitation of CVE-2025-27156 in the wild and no public exploit code.

## Other vulnerabilities in Enalean Tuleap

- [CVE-2018-17298](https://insights.sbomify.com/CVE-2018-17298/): Business logic in n/a (critical 9.8)
- [CVE-2018-7538](https://insights.sbomify.com/CVE-2018-7538/): SQL injection in n/a (critical 9.8)
- [CVE-2014-7178](https://insights.sbomify.com/CVE-2014-7178/): Command injection in n/a (critical 9.3)
- [CVE-2021-43806](https://insights.sbomify.com/CVE-2021-43806/): SQL injection in Tuleap (high 8.8)
- [CVE-2021-41154](https://insights.sbomify.com/CVE-2021-41154/): SQL injection in the "SVN core" commits browser (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27156 and fix it if it is affected.

What it is: CVE-2025-27156 is a medium-severity cross-site scripting vulnerability in Enalean Tuleap, published on 4 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-27156 in the wild and no public exploit code.

Affected product: Enalean Tuleap. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-27156/ (Markdown: https://insights.sbomify.com/CVE-2025-27156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27156
- OSV: https://osv.dev/vulnerability/CVE-2025-27156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27156/
Summaries are generated and may contain mistakes; the official description above is the record.